#include <REGX52.H>

void Delay1000ms()		//@11.0592MHz
{
	unsigned char i, j, k;

	i = 8;
	j = 1;
	k = 243;
	do
	{
		do
		{
			while (--k);
		} while (--j);
	} while (--i);
}


void main()
{
	while(1)
	{
		P2=0xFE;//1111 1110
		Delay1000ms();
		P2=0xFD;//1111 1101
		Delay1000ms();
		P2=0xFB;//1111 1011
		Delay1000ms();
		P2=0xF7;//1111 0111
		Delay1000ms();
		P2=0xEF;//1110 1111
		Delay1000ms();
		P2=0xDF;//1101 1111
		Delay1000ms();
		P2=0xBF;//1011 1111
		Delay1000ms();
		P2=0x7F;//0111 1111
 		Delay1000ms();
		
	}
}
